Influence of Thermal Annealing on the Microstructural Properties of Indium Tin Oxide Nanoparticles

Bulletin of the Korean chemical society

Hyun Chul Choi¹  Sungnam Kim¹  Seung Bin Kim¹ 

关键词: ITO nanoparticles;    Microstructural changes;    Thermal annealing;    DRIFT;    2D correlation analysis;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

In this work, we studied the microstructural changes of ITO during the annealing process. ITO nanoparticles were prepared by the sol-gel method using indium tin hydroxide as the precursor. The prepared sample was investigated using TEM, powder XRD, XPS, DRIFT, and 2D correlation analysis. The O 1s XPS spectra suggested that the microstructural changes during the annealing process are closely correlated with the oxygen sites of the ITO nanoparticles. The temperature-dependent in situ DRIFT spectra suggested that In-OH in the terminal sites is firstly decomposed and, then, Sn-O-Sn is produced in the ITO nanoparticles during the thermal annealing process. Based on the 2D correlation analysis, we deduced the following sequence of events: 1483 (due to In-OH bending mode) → 2268, 2164 (due to In-OH stretching mode) → 1546 (due to overtones of Sn- O-Sn modes) → 1412 (due to overtones of Sn-O-Sn modes) cm−1.

【 授权许可】

Unknown